[resolved] Using Paypal as a pay per Post feature with a job board (1 post)

I'm using the wonderful WP themed job board by http://digitalwestex.org
Right now my board is free but I would like to set it up so registered users may pay per post for jobpost or maybe even buy multiple post at one time and it would remember how many post they have available.

If anyone out there has ideas on how to make this work I would appreciate it.